Folding device for golf trolley

ABSTRACT

A folding device of the golf trolley is connected between a main frame and a front frame of the golf trolley, and includes a first connection member on the main frame and a second connection member on the front frame. The first connection member has a locking member and the second connection member has a pin which is located corresponding to the locking member. A fixing sleeve is securely mounted to the main frame. A movable sleeve is mounted to the front frame. Two links are connected between two sides of the movable sleeve and two side wheel units. A tube is pivotably connected between the fixing sleeve and the movable sleeve. A positioning member is connected to the tube and engaged with the front frame.

BACKGROUND OF THE INVENTION

1. Fields of the Invention

The present invention relates to a golf trolley, and more particularly,to a folding device of the golf trolley.

2. Descriptions of Related Art

The conventional golf trolley is used to carry the golf bag and the golfclubs, and the golf trolley has wheels so that the players can easilymove their golf clubs with them. The golf trolley is designed to belight in weight and easily folded when not in use.

Taiwan Patent Publication No. M410587 discloses a golf trolley with atop frame, a front frame and a rear frame, wherein the top frame isconnected with a handle and the rear frame is connected with two rearwheels. A connection plate is connected between the top frame and therear frame. A rod is connected to the top frame and the rear frame. Thefront frame is connected to the top frame and has a front wheel. A linkmechanism is connected between the top frame and the front frame so asto fold the front frame and the front wheel toward the rear wheels. Itis noted that the front wheels are moved with the front frame so thatthe players do not need to collect or position the front wheels whichalways are attached with grasses and earth. However, the golf trolleyhas too many parts which are inconvenient for the players to expand andfold.

The present invention intends to provide a golf trolley to improve theshortcomings of the conventional golf trolley.

SUMMARY OF THE INVENTION

The present invention relates to a golf trolley and comprises a mainframe having a handle connected thereto, and a front frame connectedwith a front wheel. Two side wheel units are connected to two sides ofthe front frame. A folding device is connected between the main frameand the front frame, and the folding device comprises a pivotal unitwhich has a first connection member on the main frame, and a secondconnection member on the front frame. The first connection member has alocking member and the second connection member has a pin which islocated corresponding to the locking member. The first and secondconnection members are pivotably connected to each other. When thetrolley is expanded, the locking member locks on the pin. When thetrolley is to be folded, the locking member is operated to be separatedfrom the pin to allow the trolley to be folded. A fixing sleeve issecurely mounted to the main frame and a movable sleeve is mounted tothe front frame. Two links are connected between two sides of themovable sleeve and the two side wheel units. A tube is pivotablyconnected between the fixing sleeve and the movable sleeve. Apositioning member is connected to the tube and engaged with the frontframe when the trolley is folded or expanded. The folding device allowsthe main frame and the front frame to be folded or expandedconveniently, and the cooperation of the tube and the positioning membermakes the expanded trolley be stable.

Preferably, the first connection member has a first toothed portion andthe second connection member has a second toothed portion which isengaged with the first toothed portion to set the expanded status.

The primary object of the present invention is to provide a golf trolleywhose main frame and the front frame are easily folded or expanded bythe folding device. The expanded trolley is stable by the cooperation ofthe tube and the positioning member.

The present invention will become more obvious from the followingdescription when taken in connection with the accompanying drawingswhich show, for purposes of illustration only, a preferred embodiment inaccordance with the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a perspective view to show the expanded status of the golftrolley of the present invention;

FIG. 2 is an enlarged perspective view to show the folding device of thegolf trolley of the present invention;

FIG. 3 is an enlarged perspective view to show that the main frame andthe front frame are pivoted so as to fold the golf trolley of thepresent invention;

FIG. 4 is an enlarged perspective view to show that the main frame andthe front frame are in the folded status of the golf trolley of thepresent invention, and

FIG. 5 is a perspective view to show the folded golf trolley of thepresent invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT

Referring to FIGS. 1 and 2, the golf trolley of the present inventioncomprises a main frame 1 having a handle 4 connected thereto, and afront frame 2 connected with a front wheel 21. Two side wheel units 3are connected to two sides of the front frame 2. A folding device “A” isconnected between the main frame 1 and the front frame 2.

The folding device “A” has a pivotal unit 5 which comprises a firstconnection member 51 on the main frame 1, and a second connection member52 on the front frame 2. The first connection member 51 is pivotablyconnected to the second connection member 52. The first connectionmember 51 has a locking member 511 and the second connection member 52has a pin 521 which is located corresponding to the locking member 511.

A fixing sleeve 6 is securely mounted to the main frame 1 and a movablesleeve 7 is mounted to the front frame 2. Two links 71 are connectedbetween two sides of the movable sleeve 7 and the two side wheel units3.

A tube 8 is pivotably connected between the fixing sleeve 6 and themovable sleeve 7. A positioning member 81 is connected to the tube 8 andengaged with the front frame 2 whenever the golf trolley is expanded orfolded.

Further referring to FIGS. 3 to 5, when the golf trolley is to befolded, the locking member 511 on the first connection member 51 islifted to be separated from the pin 521. The main frame 1 is thenpivoted toward the front frame 2 by the pivotally connected first andsecond connection members 51, 52. During the pivotal action, thepositioning member 81 on the tube 8 is separated from the front frame 2so that the main frame 1 is pivotable. Because the fixing sleeve 6 issecurely mounted to the main frame 1, and the movable sleeve 7 ismovable relative to the front frame 2, so that the tube 8 pushes themovable sleeve 7 to move along the front frame 2 when the main frame 1is pivoted. The links 71 are then pivoted to move the two side wheelunits 3 inward as shown in FIG. 3. As shown in FIG. 4, when the mainframe 1 is folded to the folded position, the positioning member 81 onthe tube 8 is engaged with the front frame 2 again to position the mainframe 1 and the front frame 2. The handle 4 is moved to the foldedposition as shown in FIG. 5.

When expanding the golf trolley, the main frame 1 and the front frame 2are pivoted in opposite directions by the pivotal action between thefirst and second connection members 51, 52. The positioning member 81 onthe tube 8 is disengaged from the front frame 2, and the tube 8 pullsthe movable sleeve 7 to move upward along the front frame 2. When themain frame 1 and the front frame 2 are pivoted to the expandedpositions, the first and second connection members 51, 52 are positionedhead to tail. A first toothed portion 512 of the first connection member51 is engaged with a second toothed portion 522 of the second connectionmember 52 to more securely set the expanded status of the golf trolley.The positioning member 81 on the tube 8 is engaged with the front frame2 again to position the main frame 1 and the front frame 2. The finalstep is to hook the locking member 511 on the first connection member 51to the pin 521 on the second connection member 52.

The golf trolley uses the folding device “A” to fold and expand the mainframe 1 and the front frame 2, and the cooperation of the tube 8 and thepositioning member 81 makes the expanded trolley be stable.

While we have shown and described the embodiment in accordance with thepresent invention, it should be clear to those skilled in the art thatfurther embodiments may be made without departing from the scope of thepresent invention.

What is claimed is:
 1. A golf trolley comprising: a main frame having ahandle connected thereto; a front frame connected with a front wheel,two side wheel units connected to two sides of the front frame; afolding device connected between the main frame and the front frame, thefolding device having a pivotal unit which comprises a first connectionmember on the main frame and a second connection member on the frontframe, the first connection member having a locking member and thesecond connection member having a pin which is located corresponding tothe locking member; a fixing sleeve securely mounted to the main frame;a movable sleeve mounted to the front frame, two links connected betweentwo sides of the movable sleeve and the two side wheel units, and a tubepivotably connected between the fixing sleeve and the movable sleeve, apositioning member connected to the tube and engaged with the frontframe.
 2. The golf trolley as claimed in claim 1, wherein the firstconnection member has a first toothed portion and the second connectionmember has a second toothed portion.